simulationist
Noun
Meaning
An artist involved in the simulationism art movement.
One who designs or uses a simulation.
One who believes in the simulation hypothesis.
Source: en.wiktionary.orgExamples
The HeroQuest game system, written by Robin Laws in collaboration with Greg Stafford, is radically different from RuneQuest in that it emphasises narrativist aspects of role-playing; in contrast, RuneQuest emphasised simulationist aspects.
From that was evolved a structurally simulationist system.
Hero Wars uses an innovative resolution system capable of fulfilling either simulationist or narrativist play with no modification.